Visual test workload execution modeling

ABSTRACT

Aspects of the present invention include a method, system and computer program product for creating a test workload execution model. The method includes a processor determining relationships between a work unit and one or more activities in a set of activities that the work unit exercises by utilizing one or more data stores; determining a distribution of the one or more activities in the set of activities; providing a control for each of the one or more activities in the set of activities; responding to a change in a control for one of the one or more activities in the set of activities; and determining whether to perform a store activity or a view activity.

BACKGROUND

The present invention relates to the testing of software, and more specifically, to a method, system and computer program product that implement aspects of workload and operational profiling, thereby resulting in improvements in the testing of customer software.

In the field of software testing, as in many other technical fields, improvements are constantly being sought, primarily for cost and accuracy reasons. A fundamental goal of software testing in theory is to identify all of the problems in a customer's software program before the program is released for use by the customer. However, in reality this is far from the case as typically a software program is released to the customer having some number of problems that were unidentified during the software development and testing process.

A relatively more proactive approach to improving software testing is sought that employs traditional methods of understanding characteristics of clients' environments, augmented with a process of data mining empirical systems data. Such client environment and workload profiling analysis may result in software test improvements based on characteristics comparisons between the client and the test environments.

SUMMARY

According to one or more embodiments of the present invention, a computer-implemented method includes determining, by a processor, relationships between a work unit and one or more activities in a set of activities that the work unit exercises by utilizing one or more data stores; determining, by the processor, a distribution of the one or more activities in the set of activities; and providing, by the processor, a control for each of the one or more activities in the set of activities. The method also includes responding, by the processor, to a change in a control for one of the one or more activities in the set of activities; and determining, by the processor, whether to perform a store activity or a view activity.

According to another embodiment of the present invention, a system includes a processor in communication with one or more types of memory, the processor configured to determine relationships between a work unit and one or more activities in a set of activities that the work unit exercises by utilizing one or more data stores; to determine a distribution of the one or more activities in the set of activities; and to provide a control for each of the one or more activities in the set of activities. The processor is also configured to provide a control for each of the one or more activities in the set of activities, and to determine whether to perform a store activity or a view activity.

According to yet another embodiment of the present invention, a computer program product includes a non-transitory storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method that includes determining, by a processor, relationships between a work unit and one or more activities in a set of activities that the work unit exercises by utilizing one or more data stores; determining, by the processor, a distribution of the one or more activities in the set of activities; and providing, by the processor, a control for each of the one or more activities in the set of activities. The method also includes responding, by the processor, to a change in a control for one of the one or more activities in the set of activities; and determining, by the processor, whether to perform a store activity or a view activity.

Additional features and advantages are realized through the techniques of the present invention. Other embodiments and aspects of the invention are described in detail herein and are considered a part of the claimed invention. For a better understanding of the invention with the advantages and the features, refer to the description and to the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The subject matter which is regarded as the invention is particularly pointed out and distinctly claimed in the claims at the conclusion of the specification. The forgoing and other features, and advantages of the invention are apparent from the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 depicts a cloud computing environment according to one or more embodiments of the present invention;

FIG. 2 depicts abstraction model layers according to one or more embodiments of the present invention;

FIG. 3 is a block diagram illustrating one example of a processing system for practice of the teachings herein;

FIG. 4 is a flow diagram of a method for creating a test workload execution model in accordance with one or more embodiments of the present invention; and

FIG. 5 is a diagram of a screen display showing a visual user interface to a test workload execution model that is created by the method of the flow diagram of FIG. 4, in accordance with one or more embodiments of the present invention.

DETAILED DESCRIPTION

It is understood in advance that although this disclosure includes a detailed description on cloud computing, implementation of the teachings recited herein are not limited to a cloud computing environment. Rather, embodiments of the present invention are capable of being implemented in conjunction with any other type of computing environment now known or later developed.

Cloud computing is a model of service delivery for enabling convenient, on-demand network access to a shared pool of configurable computing resources (e.g. networks, network bandwidth, servers, processing, memory, storage, applications, virtual machines, and services) that can be rapidly provisioned and released with minimal management effort or interaction with a provider of the service. This cloud model may include at least five characteristics, at least three service models, and at least four deployment models.

Characteristics are as follows:

On-demand self-service: a cloud consumer can unilaterally provision computing capabilities, such as server time and network storage, as needed automatically without requiring human interaction with the service's provider.

Broad network access: capabilities are available over a network and accessed through standard mechanisms that promote use by heterogeneous thin or thick client platforms (e.g., mobile phones, laptops, and PDAs).

Resource pooling: the provider's computing resources are pooled to serve multiple consumers using a multi-tenant model, with different physical and virtual resources dynamically assigned and reassigned according to demand. There is a sense of location independence in that the consumer generally has no control or knowledge over the exact location of the provided resources but may be able to specify location at a higher level of abstraction (e.g., country, state, or datacenter).

Rapid elasticity: capabilities can be rapidly and elastically provisioned, in some cases automatically, to quickly scale out and rapidly released to quickly scale in. To the consumer, the capabilities available for provisioning often appear to be unlimited and can be purchased in any quantity at any time.

Measured service: cloud systems automatically control and optimize resource use by leveraging a metering capability at some level of abstraction appropriate to the type of service (e.g., storage, processing, bandwidth, and active user accounts). Resource usage can be monitored, controlled, and reported providing transparency for both the provider and consumer of the utilized service.

Service Models are as follows:

Software as a Service (SaaS): the capability provided to the consumer is to use the provider's applications running on a cloud infrastructure. The applications are accessible from various client devices through a thin client interface such as a web browser (e.g., web-based e-mail). The consumer does not manage or control the underlying cloud infrastructure including network, servers, operating systems, storage, or even individual application capabilities, with the possible exception of limited user-specific application configuration settings.

Platform as a Service (PaaS): the capability provided to the consumer is to deploy onto the cloud infrastructure consumer-created or acquired applications created using programming languages and tools supported by the provider. The consumer does not manage or control the underlying cloud infrastructure including networks, servers, operating systems, or storage, but has control over the deployed applications and possibly application hosting environment configurations.

Infrastructure as a Service (IaaS): the capability provided to the consumer is to provision processing, storage, networks, and other fundamental computing resources where the consumer is able to deploy and run arbitrary software, which can include operating systems and applications. The consumer does not manage or control the underlying cloud infrastructure but has control over operating systems, storage, deployed applications, and possibly limited control of select networking components (e.g., host firewalls).

Deployment Models are as follows:

Private cloud: the cloud infrastructure is operated solely for an organization. It may be managed by the organization or a third party and may exist on-premises or off-premises.

Community cloud: the cloud infrastructure is shared by several organizations and supports a specific community that has shared concerns (e.g., mission, security requirements, policy, and compliance considerations). It may be managed by the organizations or a third party and may exist on-premises or off-premises.

Public cloud: the cloud infrastructure is made available to the general public or a large industry group and is owned by an organization selling cloud services.

Hybrid cloud: the cloud infrastructure is a composition of two or more clouds (private, community, or public) that remain unique entities but are bound together by standardized or proprietary technology that enables data and application portability (e.g., cloud bursting for load-balancing between clouds).

A cloud computing environment is service oriented with a focus on statelessness, low coupling, modularity, and semantic interoperability. At the heart of cloud computing is an infrastructure comprising a network of interconnected nodes.

Referring now to FIG. 1, illustrative cloud computing environment 50 is depicted. As shown, cloud computing environment 50 comprises one or more cloud computing nodes 10 with which local computing devices used by cloud consumers, such as, for example, personal digital assistant (PDA) or cellular telephone 54A, desktop computer 54B, laptop computer 54C, and/or automobile computer system 54N may communicate. Nodes 10 may communicate with one another. They may be grouped (not shown) physically or virtually, in one or more networks, such as Private, Community, Public, or Hybrid clouds as described hereinabove, or a combination thereof. This allows cloud computing environment 50 to offer infrastructure, platforms and/or software as services for which a cloud consumer does not need to maintain resources on a local computing device. It is understood that the types of computing devices 54A-N shown in FIG. 1 are intended to be illustrative only and that computing nodes 10 and cloud computing environment 50 can communicate with any type of computerized device over any type of network and/or network addressable connection (e.g., using a web browser).

Referring now to FIG. 2, a set of functional abstraction layers provided by cloud computing environment 50 (FIG. 1) is shown. It should be understood in advance that the components, layers, and functions shown in FIG. 2 are intended to be illustrative only and embodiments of the invention are not limited thereto. As depicted, the following layers and corresponding functions are provided:

Hardware and software layer 60 includes hardware and software components. Examples of hardware components include: mainframes 61; RISC (Reduced Instruction Set Computer) architecture based servers 62; servers 63; blade servers 64; storage devices 65; and networks and networking components 66. In some embodiments, software components include network application server software 67 and database software 68.

Virtualization layer 70 provides an abstraction layer from which the following examples of virtual entities may be provided: virtual servers 71; virtual storage 72; virtual networks 73, including virtual private networks; virtual applications and operating systems 74; and virtual clients 75.

In one example, management layer 80 may provide the functions described below. Resource provisioning 81 provides dynamic procurement of computing resources and other resources that are utilized to perform tasks within the cloud computing environment. Metering and Pricing 82 provide cost tracking as resources are utilized within the cloud computing environment, and billing or invoicing for consumption of these resources. In one example, these resources may comprise application software licenses. Security provides identity verification for cloud consumers and tasks, as well as protection for data and other resources. User portal 83 provides access to the cloud computing environment for consumers and system administrators. Service level management 84 provides cloud computing resource allocation and management such that required service levels are met. Service Level Agreement (SLA) planning and fulfillment 85 provide pre-arrangement for, and procurement of, cloud computing resources for which a future requirement is anticipated in accordance with an SLA.

Workloads layer 90 provides examples of functionality for which the cloud computing environment may be utilized. Examples of workloads and functions which may be provided from this layer include: mapping and navigation 91; software development and lifecycle management 92; virtual classroom education delivery 93; data analytics processing 94; transaction processing 95; and a method 96 for creating a test workload execution model in accordance with one or more embodiments of the present invention.

Referring to FIG. 3, there is shown a processing system 100 for implementing the teachings herein according to one or more embodiments. The system 100 has one or more central processing units (processors) 101 a, 101 b, 101 c, etc. (collectively or generically referred to as processor(s) 101). In one embodiment, each processor 101 may include a reduced instruction set computer (RISC) microprocessor. Processors 101 are coupled to system memory 114 and various other components via a system bus 113. Read only memory (ROM) 102 is coupled to the system bus 113 and may include a basic input/output system (BIOS), which controls certain basic functions of system 100.

FIG. 3 further depicts an input/output (I/O) adapter 107 and a network adapter 106 coupled to the system bus 113. I/O adapter 107 may be a small computer system interface (SCSI) adapter that communicates with a hard disk 103 and/or tape storage drive 105 or any other similar component. I/O adapter 107, hard disk 103, and tape storage device 105 are collectively referred to herein as mass storage 104. Operating system 120 for execution on the processing system 100 may be stored in mass storage 104. A network adapter 106 interconnects bus 113 with an outside network 116 enabling data processing system 100 to communicate with other such systems. A screen (e.g., a display monitor) 115 is connected to system bus 113 by display adaptor 112, which may include a graphics adapter to improve the performance of graphics intensive applications and a video controller. In one embodiment, adapters 107, 106, and 112 may be connected to one or more I/O busses that are connected to system bus 113 via an intermediate bus bridge (not shown). Suitable I/O buses for connecting peripheral devices such as hard disk controllers, network adapters, and graphics adapters typically include common protocols, such as the Peripheral Component Interconnect (PCI). Additional input/output devices are shown as connected to system bus 113 via user interface adapter 108 and display adapter 112. A keyboard 109, mouse 110, and speaker 111 all interconnected to bus 113 via user interface adapter 108, which may include, for example, a Super I/O chip integrating multiple device adapters into a single integrated circuit.

In exemplary embodiments, the processing system 100 includes a graphics processing unit 130. Graphics processing unit 130 is a specialized electronic circuit designed to manipulate and alter memory to accelerate the creation of images in a frame buffer intended for output to a display. In general, graphics processing unit 130 is very efficient at manipulating computer graphics and image processing, and has a highly parallel structure that makes it more effective than general-purpose CPUs for algorithms where processing of large blocks of data is done in parallel.

Thus, as configured in FIG. 3, the system 100 includes processing capability in the form of processors 101, storage capability including system memory 114 and mass storage 104, input means such as keyboard 109 and mouse 110, and output capability including speaker 111 and display 115. In one embodiment, a portion of system memory 114 and mass storage 104 collectively store an operating system to coordinate the functions of the various components shown in FIG. 3.

In accordance with one or more embodiments of the present invention, methods, systems, and computer program products are disclosed for creating a test workload execution model.

In software testing, it is not at all uncommon to run tests and workloads with a model that is not productive. Workload variation and convergence to customer activity are required in order to target defects most likely to impact a customer. Having test workload activity that is modeled after real customer production environments is desirable for finding the right defects.

One or more embodiments of the present invention utilize a body of available workload work unit activity data, data store activity data, and a workload execution distribution scheme. From this, a test workload execution can be modeled with customer data convergence as a goal.

Exemplary embodiments include methods, systems and computer program products for traditional and cloud based storage of workload models that are created using a visual interface. Workload models can be created, stored for others to use, and for future use. The models contain the information about the execution distribution of workload work units. Each work unit exercises a set of activities that utilize one or more data stores. By creating and storing the work unit activities by work unit and data store, one can create distribution adjustment controls such as sliders to increase or decrease the amount of an activity. Furthermore, the activities can be grouped by work unit (transaction), data store (database), main activity for a unit of work, atomic activity for a unit of work, or combo activity for multiple activities in a unit of work. With the control value and the available workload work unit data, one can adjust the workload execution distribution to match the visual model being displayed. In this way, a tester or analyst can see the change and understand if the change may help or harm convergence to a customer activity model.

The workload data required for execution distribution modeling includes the data store mapping for work unit activity and work unit mapping. An execution distribution is calculated using this information. Since each work unit activities are known, creating a distribution is as simple as a multiplication.

Relatively high value customers such as OLTP (online transaction processing) virtual user simulation workloads that load and stress test VSAM/RLS, DB2, IMS, CICS, etc. are driven by TPNS (teleprocessing network simulation). These were originally designed as performance benchmark workloads. When these workloads were adopted as systems level load and stress test vehicles, there was little or no consideration to the fact that the transaction mix was setup and reused relentlessly because, with LSPR benchmark testing, repeatable results are desired. However, in a large systems load and stress test this is not the most desirable workload characteristic to maintain.

The load is created by one or more workload's activity as the driver of the system conditions of high processor, I/O, communications, graphics, etc. (system resource) utilization. Stress is the resulting system resource constraints that cause system component interactions and timings to change where overall performance can become limited and begin to degrade. A relatively highly stressed system is more likely to encounter problems as compared to a system with relatively low stress levels. A big difference in mainframe computing systems versus smaller systems is that mainframes are capable of consistently running at extremely high utilization rates—close to 100%. For this reason load and stress of the system is an important aspect of mainframe testing. An example of load and stress is if the system is scaled up with more and faster processors and I/O devices and more memory (reduce stress on the system), then the system can handle more load (higher workload activity levels).

In large systems, load and stress testing having variability in the mix of transactions is key to driving different system pressure points. This variability exercises different code paths in the target components and is more desirable from a defect discovery point of view. One of the difficulties in adding variability is that intimate workload application knowledge is required and few or no test personnel possess the required application level skill. The intimate knowledge of the application needs to be quantified and made available in a simple to use tool that allows test personnel without intimate application level knowledge to model a transaction mix and visually see the changes prior to running a given workload.

TPNS has PATH and DIST parameters that allow a particular mix and distribution for each transaction. However, there is no way to model the distribution relating to transaction or database. There is also no way to model the distribution from a transaction activity point of view.

Thus, one or more embodiments of the present invention utilize test workload application information relating transaction activity to transaction data store, to thereby visually model the execution mix of transactions for the test workload. The resulting mix is used to create a transaction distribution to be followed by the user simulation tool such that each transaction is appropriately exercised according to the visual model.

With reference now to FIG. 4, a flow diagram illustrates a method 200 according to one or more embodiments of the present invention for creating a test workload execution model. The terms “create” or “creating” a model as used herein may mean the initial creation of a “new” model where none existed beforehand, or the adjustment to various work unit activities of an existing model such that a “new” model is created.

In one or more embodiments of the present invention, the method 200 may be embodied in software that is executed by computer elements located within a network that may reside in the cloud, such as the cloud computing environment 50 described hereinabove and illustrated in FIGS. 1 and 2. In other embodiments, the computer elements may reside on a computer system or processing system, such as the processing system 100 described hereinabove and illustrated in FIG. 3, or in some other type of computing or processing environment.

The method 200 begins in block 204, followed by block 208 in which an operation defines or determines relationships between a work unit and the one or more activities in a set of activities that the work unit exercises by utilizing one or more data stores.

In block 212, an operation is performed in which the activity distribution of the work unit is defined or determined based on the relationships determined in block 208.

In block 216, various controls are provided to a user for adjusting the amount of each of the one or more activities in the work unit of the test workload execution model.

Referring also to FIG. 5, there illustrated is a diagram 304 of a screen display 300 showing a visual user interface to a test workload execution model that is created by the method of the flow diagram of FIG. 4, in accordance with one or more embodiments of the present invention.

In block 220, the model is responsive to any changes made by the user to the distribution of any one or more of the activities in the work unit such that the model reflects the desired changes made thereto. This way, the user can update or revise the test workload model in a relatively easy manner to thereby “create” a new model. For example, as illustrated in the diagram 304 of FIG. 5, a “Modeling Control” area 308 comprises, in an exemplary embodiment, a multiple of horizontal slider controls that a user may use on the display screen 300 by placing the cursor over any slider and then moving the cursor either right or left to control the increase or decrease in the amount of an activity of a work unit in the test workload model.

In block 224, an operation determines if it is desired to store the current version of the test workload model for test use at some point in the future. If so, in block 240 the test workload model is stored for later use, and then the method 200 ends in block 244.

Instead, if it determined in block 224 that it is desired to view various types of work unit activities, a block 228 includes an operation in which the diagram 304 displays a current view of the work unit activity by, e.g., transaction. This is shown in the area 316 in the diagram 304 of FIG. 5, which is located within a larger area 312 of the diagram 304 labeled “Modeling Result.” There the various “Transactions” shown in the left most column in the area 308 have their resulting activity levels depicted in the area 316 by bar charts, using, e.g. colors.

In block 232, an operation is performed which displays the current view of the work unit activity by, e.g., data store or database. This is shown in the area 320 in the diagram 304 of FIG. 5. Again, bar charts in color may be used to indicate the various different levels of activity by the various data stores within the work unit.

In block 236, an operation is performed which displays the current view of the work unit activity by, e.g., activity type. This is shown in the area 324 in the diagram 304 of FIG. 5. Again, bar charts in color may be used to indicate the various different levels of activity by the various types of activities within the work unit. Also, a donut chart may be used within the area 324 to illustrate the percentage of activity by the various activity types, again through use of colors.

The method 200 of FIG. 4 then branches back to block 220 and continues on from there as previously described herein above.

Thus, it can be seen from the foregoing that when the user changes a value of any one or more activities within the work unit, the user can immediately receive feedback by looking at the corresponding change that occurs in the various graphs and charts within the “Modeling Result” area 312 of the diagram of FIG. 5.

The present invention may be a system, a method, and/or a computer program product. The computer program product may include a computer readable storage medium (or media) having computer readable program instructions thereon for causing a processor to carry out aspects of the present invention.

The computer readable storage medium can be a tangible device that can retain and store instructions for use by an instruction execution device. The computer readable storage medium may be, for example, but is not limited to, an electronic storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing. A non-exhaustive list of more specific examples of the computer readable storage medium includes the following: a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), a static random access memory (SRAM), a portable compact disc read-only memory (CD-ROM), a digital versatile disk (DVD), a memory stick, a floppy disk, a mechanically encoded device such as punch-cards or raised structures in a groove having instructions recorded thereon, and any suitable combination of the foregoing. A computer readable storage medium, as used herein, is not to be construed as being transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through a waveguide or other transmission media (e.g., light pulses passing through a fiber-optic cable), or electrical signals transmitted through a wire.

Computer readable program instructions described herein can be downloaded to respective computing/processing devices from a computer readable storage medium or to an external computer or external storage device via a network, for example, the Internet, a local area network, a wide area network and/or a wireless network. The network may comprise copper transmission cables, optical transmission fibers, wireless transmission, routers, firewalls, switches, gateway computers and/or edge servers. A network adapter card or network interface in each computing/processing device receives computer readable program instructions from the network and forwards the computer readable program instructions for storage in a computer readable storage medium within the respective computing/processing device.

Computer readable program instructions for carrying out operations of the present invention may be assembler instructions, instruction-set-architecture (ISA) instructions, machine instructions, machine dependent instructions, microcode, firmware instructions, state-setting data, or either source code or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, C++ or the like, and conventional procedural programming languages, such as the “C” programming language or similar programming languages. The computer readable program instructions execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the latter scenario, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet Service Provider). In some embodiments, electronic circuitry including, for example, programmable logic circuitry, field-programmable gate arrays (FPGA), or programmable logic arrays (PLA) may execute the computer readable program instructions by utilizing state information of the computer readable program instructions to personalize the electronic circuitry, in order to perform aspects of the present invention.

Aspects of the present invention are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer readable program instructions.

These computer readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. These computer readable program instructions may also be stored in a computer readable storage medium that can direct a computer, a programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer readable storage medium having instructions stored therein comprises an article of manufacture including instructions which implement aspects of the function/act specified in the flowchart and/or block diagram block or blocks.

The computer readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other device to cause a series of operational steps to be performed on the computer, other programmable apparatus or other device to produce a computer implemented process, such that the instructions which execute on the computer, other programmable apparatus, or other device implement the functions/acts specified in the flowchart and/or block diagram block or blocks.

The flowchart and block diagrams in the Figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems that perform the specified functions or acts or carry out combinations of special purpose hardware and computer instructions.

The following definitions and abbreviations are to be used for the interpretation of the claims and the specification. As used herein, the terms “comprises,” “comprising,” “includes,” “including,” “has,” “having,” “contains” or “containing,” or any other variation thereof, are intended to cover a non-exclusive inclusion. For example, a composition, a mixture, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but can include other elements not expressly listed or inherent to such composition, mixture, process, method, article, or apparatus.

As used herein, the articles “a” and “an” preceding an element or component are intended to be nonrestrictive regarding the number of instances (i.e., occurrences) of the element or component. Therefore, “a” or “an” should be read to include one or at least one, and the singular word form of the element or component also includes the plural unless the number is obviously meant to be singular.

As used herein, the terms “invention” or “present invention” are non-limiting terms and not intended to refer to any single aspect of the particular invention but encompass all possible aspects as described in the specification and the claims.

As used herein, the term “about” modifying the quantity of an ingredient, component, or reactant of the invention employed refers to variation in the numerical quantity that can occur, for example, through typical measuring and liquid handling procedures used for making concentrates or solutions. Furthermore, variation can occur from inadvertent error in measuring procedures, differences in the manufacture, source, or purity of the ingredients employed to make the compositions or carry out the methods, and the like. In one aspect, the term “about” means within 10% of the reported numerical value. In another aspect, the term “about” means within 5% of the reported numerical value. Yet, in another aspect, the term “about” means within 10, 9, 8, 7, 6, 5, 4, 3, 2, or 1% of the reported numerical value.

The descriptions of the various embodiments of the present invention have been presented for purposes of illustration, but are not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein was chosen to best explain the principles of the embodiments, the practical application or technical improvement over technologies found in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein. 

What is claimed is:
 1. A system comprising: a processor in communication with one or more types of memory, the processor configured to: determine relationships between a work unit and one or more activities in a set of activities that the work unit exercises by utilizing one or more data stores; determine a distribution of the one or more activities in the set of activities; provide a control for each of the one or more activities in the set of activities; respond to a change in the control for one of the one or more activities in the set of activities, wherein the processor configured to respond to a change in the control for one of the one or more activities in the set of activities comprises the processor configured to create a test workload execution model; and determine whether to perform a store activity or a view activity.
 2. The system of claim 1 wherein the processor configured to determine whether to perform a store activity or a view activity comprises the processor configured to store the test workload execution model.
 3. The system of claim 1 wherein the processor configured to determine whether to perform a store activity or a view activity comprises the processor configured to provide a view of the test workload execution model.
 4. The system of claim 3 wherein the processor configured to provide a view of the test workload execution model comprises the processor configured to provide a visual display of each of the one or more activities of the work unit by transaction.
 5. The system of claim 3 wherein the processor configured to provide a view of the test workload execution model comprises the processor configured to provide a visual display of each of the one or more activities of the work unit by data store.
 6. The system of claim 3 wherein the processor configured to provide a view of the test workload execution model comprises the processor configured to provide a visual display of each of the one or more activities of the work unit by activity type.
 7. A computer program product comprising: a non-transitory storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method comprising: determining, by a processor, relationships between a work unit and one or more activities in a set of activities that the work unit exercises by utilizing one or more data stores; determining, by the processor, a distribution of the one or more activities in the set of activities; providing, by the processor, a control for each of the one or more activities in the set of activities; responding, by the processor, to the change in a control for one of the one or more activities in the set of activities, wherein the processor configured to respond to the change in a control for one of the one or more activities in the set of activities comprises the processor configured to create a test workload execution model; and determining, by the processor, whether to perform a store activity or a view activity.
 8. The computer program product of claim 7 wherein determining, by the processor, whether to perform a store activity or a view activity comprises storing, by the processor, the test workload execution model.
 9. The computer program product of claim 7 wherein determining, by the processor, whether to perform a store activity or a view activity comprises providing, by the processor, a view of the test workload execution model by transaction.
 10. The computer program product of claim 9 wherein providing, by the processor, a view of the test workload execution model comprises providing, by the processor, a visual display of each of the one or more activities of the work unit by data store.
 11. The computer program product of claim 9 wherein providing, by the processor, a view of the test workload execution model comprises providing, by the processor, a visual display of each of the one or more activities of the work unit by activity type. 